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Nexperia USA Inc. BZB84-C43,215
- Part No.:
- BZB84-C43,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C43,215.pdf
- Description:
- DIODE ZENER ARRAY 43V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,463
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Product details
Overview
BZB84-C43,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, designed for precision voltage regulation and transient suppression in compact power rails. It delivers nominal 43 V Zener voltage (40.0–46.0 V), ±5 % tolerance, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power - enabling robust overvoltage protection in automotive body control modules.
For engineers reviewing the BZB84-C43,215 datasheet, BZB84-C43,215 pinout, BZB84-C43,215 application, or BZB84-C43,215 equivalent, this device supports dual-rail clamping, AEC-Q101-compliant automotive designs, low-capacitance (<40 pF) signal line protection, and thermal-stable regulation across −55 °C to +150 °C ambient.
Technical Context
This dual-Zener uses a shared anode configuration (Pin 3) with independent cathodes (Pins 1 and 2), allowing bidirectional clamping or independent voltage reference generation per diode. Its differential resistance of 375 Ω at IZ = 2 mA ensures stable regulation under moderate load variation.
The device operates with a temperature coefficient of +30.1 to +46.6 mV/K - positive above ~5 V - enabling predictable drift compensation in temperature-critical bias networks. It meets AEC-Q101 stress qualification for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 40.0 V to 46.0 V at IZ = 2 mA - defines clamping threshold range for overvoltage protection |
| Tolerance | ±5 % - enables cost-effective selection for non-critical regulation where tight voltage accuracy is not required |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling per package |
| Non-repetitive Peak Power | 40 W (tp = 100 µs) - supports surge immunity against ESD and load-dump transients |
| Differential Resistance | 375 Ω max at IZ = 2 mA - determines regulation stiffness and output impedance in reference circuits |
| Reverse Current (IR) | ≤0.05 µA at VR = 30.1 V - ensures minimal leakage in high-impedance sensing or standby paths |
| Junction Temperature | −55 °C to +150 °C - validated operation across full automotive under-hood thermal envelope |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-pin, small outline, lead-free, RoHS-compliant, optimized for automated placement and reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Provides Zener breakdown path for first diode; connects to regulated node or clamp target |
| 2 | Cathode (Diode 2) | Independent Zener path for second rail or redundancy; enables dual-voltage referencing |
| 3 | Common Anode | Shared return path; simplifies layout by eliminating separate anode traces and reduces parasitic inductance |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables space-efficient dual-rail clamping without discrete anode routing or extra passives |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity, and mechanical shock per JESD22 |
| Wide Zener voltage range | 43 V nominal fits ISO 7637-2 load-dump pulse suppression (up to 120 V peak) when combined with series impedance |
| Low junction-to-ambient thermal resistance | 417 K/W in free air - allows direct thermal coupling to copper pour for enhanced surge energy absorption |
| Small SOT23 footprint | 1.3 mm × 2.9 mm area - supports high-density PCB layouts in ECUs, ADAS sensors, and infotainment power supplies |
Applications
| Automotive Load-Dump Protection | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Protecting 12 V automotive microcontroller inputs during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Dual-Zener clamps both supply and signal lines to safe voltage while absorbing up to 40 W transient energy. Use Value: Eliminates need for external TVS arrays; leverages common-anode structure to share ground path and reduce board area by 35 % vs. two discrete Zeners. |
Use Scenario: Providing stable 43 V bias for high-side current-sense amplifier in motor drive feedback loop. IC Role / Device Role / Timing Role: Acts as precision shunt reference with <±5 % tolerance and +37.6 mV/K tempco for predictable drift compensation. Use Value: Enables accurate current measurement across −40 °C to +125 °C without calibration; differential resistance <375 Ω minimizes error from sense resistor loading. |
| Redundant Power Rail Clamp | Low-Power IoT Node Voltage Supervisor |
|
Use Scenario: Dual-rail overvoltage clamp for backup battery and main supply in telematics gateway. IC Role / Device Role / Timing Role: Each cathode independently protects one rail; common anode simplifies connection to system ground plane. Use Value: Reduces component count by 1 vs. two discrete Zeners; SOT23 footprint saves >1.2 mm² PCB area per rail versus SOIC alternatives. |
Use Scenario: Monitoring 48 V PoE-derived rail in smart building sensor node with ultra-low quiescent current. IC Role / Device Role / Timing Role: Zener conducts only during overvoltage fault; leakage <0.05 µA preserves battery life in sleep mode. Use Value: Supports >10-year battery life in wireless nodes; AEC-Q101 qualification ensures reliability in unattended deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZB84-B43,215 | ±2 % tolerance (vs. ±5 %); tighter VZ spread (42.1–43.9 V) | Preferred for precision reference circuits requiring <1 % absolute error | Select when regulation accuracy outweighs cost sensitivity; same package and thermal specs |
| MMBZ5263B-7-F | Single Zener (43 V, ±5 %), SOT23, 350 mW Ptot, no dual configuration | Requires two devices for dual-rail use; lacks common-anode integration | Choose only if dual functionality is unnecessary and higher Ptot is critical |
Compared with BZB84-C43,215, the BZB84-B43,215 offers tighter voltage control at higher cost, while MMBZ5263B-7-F sacrifices dual-rail integration for marginally higher power rating - making the C-grade part optimal for cost-sensitive, space-constrained automotive clamping.
Availability
BZB84-C43,215 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, redundant power rail clamping, and low-power IoT voltage supervision requiring stable component supply and long-term lifecycle support.
Supply support for BZB84-C43,215 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.
The BZB84 series targets cost-effective, space-efficient voltage regulation and transient suppression in automotive and industrial systems - emphasizing AEC-Q101 compliance, SOT23 miniaturization, and dual-diode integration.
FAQ
What is the maximum continuous reverse current the BZB84-C43,215 can sustain?
The device has no specified continuous reverse current rating; its steady-state operation is governed by total power dissipation (300 mW max at 25 °C ambient). At 43 V, this limits average Zener current to ≈7 mA. Derating is required above 25 °C using Rth(j-a) = 417 K/W to avoid exceeding 150 °C junction temperature.
Can BZB84-C43,215 be used for bidirectional ESD protection?
No - it is a unidirectional Zener diode pair with common anode. For bidirectional ESD clamping, a dedicated TVS diode like PESD5V0S1BA is required. BZB84-C43,215 provides only forward conduction (anode-to-cathode) and reverse Zener breakdown (cathode-to-anode), not symmetrical clamping.
How does the common-anode configuration affect PCB layout?
The shared Pin 3 anode eliminates the need for separate ground traces for each diode, reducing routing congestion and parasitic inductance. Layout best practice is to connect Pin 3 directly to a large copper pour or internal ground plane, while keeping cathode traces short and symmetric to minimize imbalance during transient events.
Is thermal derating required for operation at 105 °C ambient?
Yes - at 105 °C ambient, the allowable power must be reduced to maintain Tj ≤ 150 °C. With Rth(j-a) = 417 K/W, the permissible power is (150 − 105) / 417 ≈ 108 mW. This corresponds to ~2.5 mA average Zener current at 43 V, requiring careful thermal design or forced airflow in high-temp environments.
BZB84-C43,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 30.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-C43,215 FAQ
1.How can I place an order for BZB84-C43,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C43,215 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZB84-C43,215 reliable?
The price and inventory of BZB84-C43,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-C43,215 is usually 5 days.
3.What payment methods are accepted for BZB84-C43,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C43,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C43,215?
BZB84-C43,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C43,215 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZB84-C43,215?
For technical support, including BZB84-C43,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C43,215 requirements.
6.How does Aetrix verify that BZB84-C43,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-C43,215 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZB84-C43,215 meets industry standards.
7.What is the process for return or replacement of BZB84-C43,215?
All BZB84-C43,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C43,215, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZB84-C43,215 part is unused and in its original packaging.
Return procedure for BZB84-C43,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C43,215 Tags
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